Blow-pipe lamp



(No Model.)

W. P. BUTLER.

BLOW PIPP LAMP.

. Patented NV. 19, 1889.

III! .Illllllll Ill! N. PETins, Phme-mhugrapher, wmmngmn, D; C.

UNITED STATES PATENT OFFICE,

lWILLIAM P. BUTLER, OF CHICAGO, ILLINOIS.

BLOW-PIPE LAMP.

SPECIFICATION forming part of Letters `Patent No. 415,613, datedNovember 19, 1889.

i Application led June 8, 1889. Serial No.313,582. (No model.)

To all whom t may concern: i

Be it known that I, WILLIAM P. BUTLER, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented new and useful Improvements in Blow-Pipe Lamps, of which thefol- 'or condense air for the purpose of forcing gasoline to thevaporizer of the burner.

The main object of my invention is to provide a novel blow-pipe lampwhich can be practically and efciently worked in an inverted position orupside down for a considerable time, which has been found very desirablein order to operate on objects or in places where the iixed burner onthe top of an ordinary blow-pipe lamp could not otherwise be applied.

This invention also has for its object to provide a blow-pipe lamp ofthe type alluded to with novel means for preventing the gasoline and thevapor thereof from gaining access to the reciprocating plunger and thecylinder of the air-pump mounted on the tank.

These objects I accomplish by the features ot' construction andcombination of devices hereinafter described andclaimed, reference beingmade to the accompanying drawings, in Which Figure 1 is a sectional sideelevation of a blow-pipe lamp embodying my invention. Fig. 2 is a topplan view of the same, and Fig. 3 is a broken sectional view showing thelower end of the air-pump.

In order to enable those skilled in the art to make and use myinvention,I will now describe the same in detail, referring to thedrawings, wherein- 'lhe numeral 1 indicates the portable gasoline tankor vessel having in its cover or top wall 2 an orilice closed by ascrew-threaded or other plug or stopper 3, for supplying the tank withgasoline or other combustible liquid. The cover or top wall is alsoprovided with a screw-threaded orifice et, with which ,other spring 17.

vided near its upper end-With an air-'inlet' orifice 11, and contains apacked plunger 12, secured to the lower end of the plunger-rod 13. Thelower end Wall of the pump-cylinder is provided with a port in whichworks the guide-stem 14 of a downwardly-opening valve' l5, which isadapted to be seated upwardly against thebottom Wall of the cylinder toclose the port through the medium of a cupshaped cap 16, moved upward bya coiledor The communication between the air-tube 8 and the valve-casing9 is constantly open; but the spring and valve close the valve-port eachtime the pumpplunger is raised. y

The air-valve casing 6 contains a rotary valve 18, having in one side alongitudinal groove 19, forming aport, which is parallel to the axis ofthe valve, so that when the latter is axially rotated to lthe positionshown in Fig. 1 the groove communicates at one end with the nipple 5 andat the opposite end with the -neck 7 for the passage of air into thetank above the surface of the gasoline therein contained. The air-pumpcylinder is 'arranged in a vertical position at one side of the tank,and is supported on the latter through the medium of upper and lowerrigid brackets or arms, so that the pump is sustained entirelyindependent of the air-tube 8.

To the cover or top of the tank is rigidly fixed, by a screw-threadedconnection, the vapor-burner consisting of the perforated shell 20,packing-tube 21, needle-valve 22, and oil cup or receptacle 23 forstarting the burner, as is ordinarilypracticed in this type of lamp.

The packing-tube of the burner connects with a tubular neck 2t,depending from the cover or top wall 2, and to this neck is secured avertical secondary oil-reservoir 25,

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- sion should demand.

open at its lower end to the interior of the tank by means of asupply-tube hereinafter d escribed. This secondary reservoir is shown ascomposed of a tube of uniform diameter and circular in crosssection, andat its upper end is in constant communication with the vaporizer of theburner. An oil conveying or supply tube 26 .is arranged in the secondaryreservoir and passes through a disk 27, which is in contact with theinternal surface of the reservoir, such supply-tube being of lessdiameter than the secondary reservoir, and rising up and within thelatter, so that the combustible fluid flowing into the supplytube willoveriiow at its upperl end into the secondary reservoir. Theconstruction is such,

as will be obvious, that even though the supply of iiuid in the tank beexhausted the apparatus can still be inverted and worked with thecombustible fluid that has previously passed into the secondaryreservoir, if o cca- The object of this construction is to provide asupply of oil in the secondary reservoir below the burner that willpermit the lamp to be inverted or turned upside down, and then bepractically used for a considerable length of time in such inused inlocalities where the burner could not otherwise be applied.

Having thus described my invention, what I claim is- 1. In a blow-pipelamp, the combination, with a portable oil-tank having the tube of avapor-burner attached and rising from its top portion, and means forcompressing air in the tank to force oil to the burner, of a secondaryoil-reservoir having its upper end connected with the tube of the burnerat the top portion of the oil-tank, and an oil-supply tube rising withinthe secondary reservoir to lill the latter with oil from the tank forfeeding the burner when the tank is inverted, substantially asdescribed.

2. In a blow-pipe lamp, `the combination, with a portable oil-tankhaving a vaporburner attached to its top portion, of a secondaryoil-reservoir suspended within the tank from the cover or top wallthereof and connected at its upper end with the burner through the topportion of the tank, and a I supply-tube for supplying the secondaryres'- ervoir, substantially as described.

In a blow-pipe lamp, the combination, with a portable oil-tank having avaporburner, of a secondary oil-reservoir suspended within the tank andcontaining within it an g oil-tube for conducting oil into the secondaryreservoir and permitting the lamp to be operated in an invertedposition, substantially as described.

4. In a blow-pipe lamp, the combination,

nected at its lower extremity to the pump,

substantially `as described.

5. In a blow-pipe lamp, the combination, with an oil-tank having aburner connected with its top portion, of an air-pump having itscylinder arranged in avertical position at one side of the tank andsupported thereupon by upper and lower rigid brackets, a tubular4air-valve ycasing having a neck and provided with a nipple connectedwith the tank-cover, a rotary valve-plug having a longitudinal port forconnecting at one end with the nipple and at the other end with the neckof the casing, and an air-tube secured at its upper end to said neck ofthe casing and yextending downward to and connected with the lower endof the air-pump, substantially as described. Y

In testimony whereof I have atixed my signature in presence of twowitnesses.

NVILLIAM P. BUTLER. Vitnesses:

V. HENKEL, W. KA.Ui/[Hernan

